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Lismore Formation

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Journal Article

Geochemistry of the Namurian Lismore Formation, northern mainland Nova Scotia: sedimentation and tectonic activity along the southern flank of the Maritimes Basin Available to Purchase

Jacquelyn E. Stevens, J. Brendan Murphy, Fred W. Chandler
Published: 01 January 2000
Canadian Journal of Earth Sciences (2000) 36 (10): 1655–1669.
DOI: https://doi.org/10.1139/e99-078
...Jacquelyn E. Stevens; J. Brendan Murphy; Fred W. Chandler Abstract Geochemical and isotopic data from the clastic rocks of the Namurian Lismore Formation in mainland Nova Scotia identify key episodes of tectonic activity during the development of the Maritimes Basin in Atlantic Canada. The Lismore...
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View PDF for article title, Geochemistry of the Namurian <span class="search-highlight">Lismore</span> <span class="search-highlight">Formation</span>, northern mainland Nova Scotia: sedimentation and tectonic activity along the southern flank of the Maritimes Basin
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Measured stratigraphic section (1050 m) of the Lismore Formation. Arrows indicate paleocurrent direction (see also Fralick 1977, 1980). bld, boulder; cgl, conglomerate; pbl, pebble; m, medium; f, fine.

Measured stratigraphic section (1050 m) of the Lismore Formation. Arrows in... Available to Purchase

Published: 01 January 2000
Fig. 3. Measured stratigraphic section (1050 m) of the Lismore Formation. Arrows indicate paleocurrent direction (see also Fralick 1977 , 1980 ). bld, boulder; cgl, conglomerate; pbl, pebble; m, medium; f, fine.
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Selected trace element ratio plots for the Lismore Formation: (a) Ti/Nb vs. Zr/Nb; (b) Ti/Y vs. Zr/Y; (c) Ti/V vs. Zr/V. Fields for potential source rocks, data sources, and abbreviations as in Fig. 4.

Selected trace element ratio plots for the Lismore Formation: ( a ) Ti/Nb v... Available to Purchase

Published: 01 January 2000
Fig. 6. Selected trace element ratio plots for the Lismore Formation: ( a ) Ti/Nb vs. Zr/Nb; ( b ) Ti/Y vs. Zr/Y; ( c ) Ti/V vs. Zr/V. Fields for potential source rocks, data sources, and abbreviations as in Fig.  4 .
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(a) REE plot for groups A and B sandstones of the Lismore Formation. (b) Calculated REE profiles for a mixed source consisting of Beechill Cove Formation (BCF) and Cobequid granitic rocks (CP) compared with the Lismore Formation (shaded region). (c) Profiles of the post-Archean Australian Shale (PAAS) and continental crust. (d) Potential source rocks in the Antigonish Highlands. BCF, Beechill Cove Formation; GG, Georgeville Group. (e) Potential source rocks in the Cobequid Highlands. COBM, Cobequid mafic rock; COBP, Cobequid granitoid plutons. (f) Potential source rocks in the Meguma Terrane. MG, Meguma granite; MMS, metasedimentary rocks. Data sources as in Fig. 4.

( a ) REE plot for groups A and B sandstones of the Lismore Formation. ( b ... Available to Purchase

Published: 01 January 2000
Fig. 7. ( a ) REE plot for groups A and B sandstones of the Lismore Formation. ( b ) Calculated REE profiles for a mixed source consisting of Beechill Cove Formation (BCF) and Cobequid granitic rocks (CP) compared with the Lismore Formation (shaded region). ( c ) Profiles of the post-Archean
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Plot of age vs. εNd for the Lismore Formation. TDM ages are given in Table 2. Envelope for Avalonian rocks from Murphy et al. (1996), Cobequid plutons (COBP) from Pe-Piper and Piper (1998), and Meguma granite (MG) and Meguma metasedimentary rocks from Clarke et al. (1988). BCF, Beechill Cove Formation.

Plot of age vs. ε Nd for the Lismore Formation. T DM ages are given in Ta... Available to Purchase

Published: 01 January 2000
Fig. 8. Plot of age vs. ε Nd for the Lismore Formation. T DM ages are given in Table  2 . Envelope for Avalonian rocks from Murphy et al. ( 1996 ), Cobequid plutons (COBP) from Pe-Piper and Piper ( 1998 ), and Meguma granite (MG) and Meguma metasedimentary rocks from Clarke et al. ( 1988 ). BCF
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147Sm/144Nd vs. 143Nd/144Nd plot shows potential mixing of the metasedimentary rocks of the Meguma Group (MMS) with the sedimentary rocks of the Beechill Cove Formation (BCF) and the Late Devonian granitic rocks of the Cobequid Highlands (COBP) to derive the sedimentary rocks of the Lismore Formation.

147 Sm/ 144 Nd vs. 143 Nd/ 144 Nd plot shows potential mixing of the metas... Available to Purchase

Published: 01 January 2000
of the Lismore Formation.
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The relationship between geochemical trends and the accumulation of heavy minerals such as apatite (Ap), allanite (Al), titanite, (Tt), Rutile (R), and zircon (Zr) in Lismore Formation sandstones: (a) Th vs. La/Sm; (b) Ti vs. Ta/La. Trends for Beechill Cove Formation (BC), Meguma plutons (MP), and Meguma metasedimentary rocks (MMS).

The relationship between geochemical trends and the accumulation of heavy m... Available to Purchase

Published: 01 January 2000
Fig. 5. The relationship between geochemical trends and the accumulation of heavy minerals such as apatite (Ap), allanite (Al), titanite, (Tt), Rutile (R), and zircon (Zr) in Lismore Formation sandstones: ( a ) Th vs. La/Sm; ( b ) Ti vs. Ta/La. Trends for Beechill Cove Formation (BC), Meguma
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Plots showing mixing curves between the Late Devonian granitic rocks of the Cobequid Highlands (COBP), the sedimentary rocks of the Beechill Cove Formation (BCF), the Meguma Group metasedimentary rocks (MMS), and the distribution of the Lismore Formation sedimentary rocks: (a) Ti/Nb vs. Zr/Y; (b) Ti/V vs. Zr/Y; (c) Zr/Y vs. V/Nb. Symbols as in Fig. 4.

Plots showing mixing curves between the Late Devonian granitic rocks of the... Available to Purchase

Published: 01 January 2000
Fig. 9. Plots showing mixing curves between the Late Devonian granitic rocks of the Cobequid Highlands (COBP), the sedimentary rocks of the Beechill Cove Formation (BCF), the Meguma Group metasedimentary rocks (MMS), and the distribution of the Lismore Formation sedimentary rocks: ( a ) Ti/Nb vs
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Variations in selected major element oxides with SiO2 for the Lismore Formation: (a) SiO2 vs. TiO2; (b) SiO2 vs. Al2O3; (c) SiO2 vs. MgO; (d) SiO2 vs. V. For comparison purposes, fields outlining the geochemistry of adjacent basement rocks are shown. BCF, Beechill Cove Formation (Murphy et al. 1995); CAL, Caledonia Highlands mafic rocks (Barr 1987); COBM, Cobequid Highlands mafic rocks (Pe-Piper and Piper 1998); COBP, Cobequid Highlands granitic plutons (Pe-Piper et al. 1989); GG, Georgeville Group (Murphy and MacDonald 1993); MG, Meguma Terrane granite plutons (Clarke et al. 1988; Ham et al. 1989); MMS, Meguma Group metasedimentary rocks (J. Dostal, unpublished data).

Variations in selected major element oxides with SiO 2 for the Lismore For... Available to Purchase

Published: 01 January 2000
Fig. 4. Variations in selected major element oxides with SiO 2 for the Lismore Formation: ( a ) SiO 2 vs. TiO 2 ; ( b ) SiO 2 vs. Al 2 O 3 ; ( c ) SiO 2 vs. MgO; ( d ) SiO 2 vs. V. For comparison purposes, fields outlining the geochemistry of adjacent basement rocks are shown. BCF, Beechill
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Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the L... Available to Purchase

Published: 01 January 2000
Table 2. Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the Lismore Formation. Sample No. Age (Ga) ε ND T DM (Ga) Group A J004 0.32 −7.5 1.48 0.12570 0.512104 0.738001 2.30439 0.727506 J013 0.32 −6.1 1.34
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Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the L... Available to Purchase

Published: 01 January 2000
Table 2. Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the Lismore Formation. Sample No. Age (Ga) ε ND T DM (Ga) Group A J004 0.32 −7.5 1.48 0.12570 0.512104 0.738001 2.30439 0.727506 J013 0.32 −6.1 1.34
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Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the L... Available to Purchase

Published: 01 January 2000
Table 2. Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the Lismore Formation. Sample No. Age (Ga) ε ND T DM (Ga) Group A J004 0.32 −7.5 1.48 0.12570 0.512104 0.738001 2.30439 0.727506 J013 0.32 −6.1 1.34
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Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the L... Available to Purchase

Published: 01 January 2000
Table 2. Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the Lismore Formation. Sample No. Age (Ga) ε ND T DM (Ga) Group A J004 0.32 −7.5 1.48 0.12570 0.512104 0.738001 2.30439 0.727506 J013 0.32 −6.1 1.34
Image

Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the L... Available to Purchase

Published: 01 January 2000
Table 2. Sm Nd and Rb Sr isotopic analyses of the group A and group B rocks of the Lismore Formation. Sample No. Age (Ga) ε ND T DM (Ga) Group A J004 0.32 −7.5 1.48 0.12570 0.512104 0.738001 2.30439 0.727506 J013 0.32 −6.1 1.34
Journal Article

Discussion on a geochemical comparison of the Dalradian Leven Schists and the Grampian Division Monadhliath Schists of Scotland Available to Purchase

Published: 01 February 1983
Journal of the Geological Society (1983) 140 (1): 163–164.
DOI: https://doi.org/10.1144/gsjgs.140.1.0163
... in Litherland (1980). The Leven Schists sensu stricto , i.e. that formation which stratigraphically underlies the Ballachulish Limestone,are confined to the floor of Glen Creran and the NE-trending Airds Hill belt, where the unit exhibits facies changes. Clearly, Lambert et al . sampled rocks other than...
View PDF for article title, Discussion on a geochemical comparison of the Dalradian Leven Schists and the Grampian Division Monadhliath Schists of Scotland
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Discussion of the North Ballachulish Dalradian Available to Purchase

Published: 01 March 1977
Journal of the Geological Society (1977) 133 (3): 277–279.
DOI: https://doi.org/10.1144/gsjgs.133.3.0277
... no evidence that the central outcrop of the Ballachulish Limestone Formation occupies the refolded inverted limb of a major recumbent fold. Bailey (1910) first postulated the Ballachulish Syncline to explain a vertical repetition of limestone, slate and schist which did not correspond to his concept...
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Journal Article

Dalradian slides and basin development: a radical interpretation of stratigraphy and structure in the SW and Central Highlands of Scotland Available to Purchase

R. ANDERTON
Published: 01 August 1988
Journal of the Geological Society (1988) 145 (4): 669–678.
DOI: https://doi.org/10.1144/gsjgs.145.4.0669
... 38 Geological Journal Special Issue Hickman A. H. The stratigraphy of late Precambrian metasediments between Glen Roy and Lismore Scottish Journal of Geology 1975 11 117 42 Litherland M. The stratigraphy of the Dalradian rocks around Loch Creran, Argyll Scottish Journal...
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Journal Article

The Grampian Group: a major Late Proterozoic clastic sequence in the Central Highlands of Scotland Available to Purchase

B. W. GLOVER, J. A. WINCHESTER
Published: 01 February 1989
Journal of the Geological Society (1989) 146 (1): 85–96.
DOI: https://doi.org/10.1144/gsjgs.146.1.0085
.... The stratigraphy and structure of the southern Monadhliath Mountains between Loch Killin and Glen Roy Scottish Journal of Geology 1982 18 275 90 Hickman A. H. The stratigraphy of late Precambrian metasediments between Glen Roy and Lismore Scottish Journal of Geology 1975 11 117 42...
View PDF for article title, The Grampian Group: a major Late Proterozoic clastic sequence in the Central Highlands of Scotland
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Journal Article

Discussion on Dalradian slides and basin development: a radical reinterpretation of stratigraphy and structure in the SW and Central Highlands of Scotland Available to Purchase

Published: 01 August 1990
Journal of the Geological Society (1990) 147 (4): 729–731.
DOI: https://doi.org/10.1144/gsjgs.147.4.0729
... and disconformities, dating back to when the Dalradian sequence was itself deposited. There can be little doubt that some formation contacts can be interpreted in this way, particularly where they affect the little-deformed Dalradian rocks lying to the northwest of the Loch Awe Syncline. However, Anderton (1988...
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Journal Article

Discussion on a late Vendian age for the Kinlochlaggan Boulder Bed (Dalradian) Available to Purchase

Published: 01 September 1997
Journal of the Geological Society (1997) 154 (5): 917–919.
DOI: https://doi.org/10.1144/gsjgs.154.5.0917
... Abstract J. E. Treagus writes: I am puzzled by the title of the paper b Evans & Tanner (1996), in which they propose to correlate the Kinlochlaggan Boulder Bed with the Port Askaig Tillite Formation. According to Harland (1990) , the Vendian is the period preceding the Cambrian and divided...
View PDF for article title, Discussion on a late Vendian age for the Kinlochlaggan Boulder Bed (Dalradian)
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